1067-42-1Relevant articles and documents
XAS/EXAFS studies of Ge nanoparticles produced by reaction between Mg 2Ge and GeCl4
Pugsley, Andrew J.,Bull, Craig L.,Sella, Andrea,Sankar, Gopinathan,McMillan, Paul F.
, p. 2345 - 2352 (2011)
We present results of an XAS and EXAFS study of the synthesis of Ge nanoparticles formed by a metathesis reaction between Mg2Ge and GeCl4 in diglyme (diethylene glycol dimethyl ether). The progress of the formation reaction and the products formed at various stages in the processing was characterised by TEM and optical spectroscopy as well as in situ XAS/EXAFS studies using specially designed reaction cells.
Anderson
, p. 3016 (1960)
Cp2TiCl2 catalyzed one-pot synthesis of n-Bu3GeH from GeCl4
Colacot, Thomas J.
, p. 378 - 381 (1999)
The reaction of GeCl4 with n-BuMgCl in presence of a catalytic amount of Cp2TiCl2 gives n-Bu3GeH and n-Bu4Ge in ca. 70 and 25% yield, respectively. This method provides an industrially feasible one-pot synthesis for Bu3GeH and Bu4Ge. The reaction temperature and stoichiometry seem to be important in the distribution of the products. Apart from elemental analysis these compounds have been characterized by comparing their boiling points, NMR spectral data and GC assay with that of the authentic samples.
Tributylgermanium hydride as a replacement for tributyltin hydride in radical reactions
Bowman, W. Russell,Krintel, Sussie L.,Schilling, Mark B.
, p. 585 - 592 (2007/10/03)
Tributylgermanium hydride (Bu3GeH) can be used as an alternative to tributyltin hydride (Bu3SnH) as a radical generating reagent with a wide range of radical substrates. Tributylgermanium hydride has several practical advantages over tributyltin hydride, e.g. low toxicity, good stability and much easier work-up of reactions. The reagent can be easily prepared in good yield and stored indefinitely. Suitable substrates include iodides, bromides, activated chlorides, phenyl selenides, tert-nitroalkanes, thiocarbonylimidazolides and Barton esters. Alkyl, vinyl and aryl radicals can be generated in radical reactions including reduction and cyclisation processes. Common radical initiators such as ACCN and triethylborane can be used. The slower rate of hydrogen abstraction by carbon-centred radicals from Bu 3GeH as compared to Bu3SnH facilitates improved cyclisation yields. Polarity reversal catalysis (PRC) with phenylthiol can be used in reactions which generate stable radical intermediates which will not abstract hydrogen from Bu3GeH.
